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Finding the Fourth Proportional to 141,676.70, 195,507.52 and 81,203.98

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Solution

The fourth proportional to 141,676.70, 195,507.52 and 81,203.98 is: 112,057.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,676.70 : 195,507.52 = 81,203.98 : x
  2. Step 2: Convert to fraction form
    141,676.70/195,507.52 = 81,203.98/x
  3. Step 3: Cross multiply
    141,676.70x = 195,507.52 × 81,203.98
  4. Step 4: Simplify right side
    141,676.70x = 15,875,988,743.93
  5. Step 5: Solve for x
    x = 15,875,988,743.93/141,676.70
  6. Step 6: Final answer
    x = 112,057.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.